NEWS RELEASE 950 Echo Lane, Suite 100 Houston, TX 77024

AT GROUP 1:	President and CEO	Earl J. Hesterberg	(713) 647-5700
	Chief Financial Officer	John C. Rickel	(713) 647-5700
	Manager, Investor Relations	Kim Paper Canning	(713) 647-5700
AT Fleishman-Hillard:	Investors/Media	Russell A. Johnson	(713) 513-9515

FOR IMMEDIATE RELEASE
THURSDAY, APRIL 13, 2006

GROUP 1 AUTOMOTIVE SCHEDULES 2006 FIRST-QUARTER
EARNINGS RELEASE AND CONFERENCE CALL

HOUSTON, April 13, 2006 — Group 1 Automotive, Inc. (NYSE: GPI), a Fortune 500 automotive retailer, announced that it will release financial results for the first quarter ended March 31, 2006, on Tuesday, May 2, at 7 a.m. EDT. Earl J. Hesterberg, Group 1’s president and chief executive officer, and the company’s senior management team will host a conference call to discuss the results later that morning at 10 a.m. EDT.

The conference call will be simulcast live on the Internet at www.group1auto.com through the Investor Relations section. A replay will be available for 30 days.

The conference call will also be available live by dialing in 10 minutes prior to the call at: 800-257-6566 (domestic) or 303-262-2052 (international).

A telephonic replay will be available through May 9 by dialing: 800-405-2236 (domestic) or 303-590-3000 (international), with passcode: 11058176#.

About Group 1 Automotive, Inc.
Group 1 owns 95 automotive dealerships comprised of 139 franchises, 31 brands and 30 collision service centers in California, Colorado, Florida, Georgia, Louisiana, Massachusetts, New Hampshire, New Jersey, New Mexico, New York, Oklahoma and Texas. Through its dealerships, the company sells new and used cars and light trucks; arranges related financing, vehicle service and insurance contracts; provides maintenance and repair services; and sells replacement parts.

Group 1 Automotive can be reached on the Internet at www.group1auto.com.